Universal coupling.



' .,H. L. B. SACHRECK.

UNIVERSAL COUPLING. A'PPLlATIoN FILED FEB. :4, A19.16.

Patented July 17, 1917.

,um L ammi@ f 'MQ' WSTNESSES ean rock as hereinafter described. 'malemember Consists ot a. head 5 torined on HANS L. B. SCHRECK. OFPITTSBURGH, PENNSYLVANIA.

UNIVERSAL COUPLING.

Specification of Letters Patent.

Patented J uly- 1 7, 1917,

Application tiled February 14, 1916. Serial No. 78.308.

lie it linown that l ll.\Ns l.. B. Siirinieii. residing at Pittsburgh.in the eoiinty ot Allegheny and State ot' Pennsylvania. a eitii zen ot'the llnited States. have invented or diseovei'ed eertain new and usefullinprovements in l'niversal Couplings. of whieh iniproveiiieiits thefollowing is a speeitieation."

The invention desei'ibed herein relates to eertain improvements inuniversal eouplingsi and has t'or itsobjeet a eonstiuetion in whiehinterposed shoestorm the'bearinifs between the male and femaleiiie-inbei's tor the. movement otl one to an angular position relativeto the other and have a bearing integral therewith t'or the movement ofmenibers at right angles to the first movement and relative` the one` tothe other. The invention is hereinafter more fully desei'ibed andclaimed. y

ln the aeeompanyling drawing forming a part oll this speeilieation.Figure l is an elevation ot' a iinilenieniber ot the eoupling: Fig. 2 isan elevation at rightangles to Fig. 1 of the saine part: Figs. :E and lare respeetive views eorrespondiiig to Figs. l

and 2 ol" the l'einale nieinber ot' the eoiipling; Figs. .'i and areelevations atright angles. one to the. other ot" the eoniplete eoupling:Fig. T is a seetional view. the plane of seetioii being iiidiialed b vthe line Fig. i3; Figs. h. 5l and l() show thel shoes in plan. in endand in side elevation respectively; Fig. 1l shows a side view and Fig.12 an end view ot' the holding pin; Fig. 123 is a -side elevation ot' ainoditieatii'm ot' the maleiiieiiiher and Fig. 1l is a plan view ot' theeonstruetion ot' shoes used in eonneetion with the l'orni ot membershown in Fig. 13.

ln the praetiee ot the invention. the unile nieniber eonsists ol aheador disk l formed on one end ot aspiiidle Q and providedlwith a` rib 3extending diainetrieally across the head or disk as shown in Fig. 1.said rib being slotted as at l for the reception ot' a bea ring trunnionon whieh the male iilemler one end of 'a spindle 6 and having eireularlyundei'jeiitI jaws 7. The curved faces of thejaws form seats for theshoes S. whieh have suitably curved outer faces, as shown in Figs. (i, 7and 8, while the inner faces are Hat to bear uniformly on the sides ofthe rib 3 of the malo member. A trunnion 9 is interposed between theseshoes which being l opening' lil.

preferably formed integral with the'shoes, will enter'the slot in therib 3 and form a bearing on whieh the male member will roelc. As the ribwhen eonstrueted with an open ended slot, as shown in Fig. 1. willstraddle the truniiioii tl. the members ofthe eoiipling ean move apart asubstantial distanee without beeoming disengaged the one t'ioni theother.

'llie shoes are held in position iyitliiai lthe teniale member bymeansot' a piii 10, which is preferably square iii eioss-seetion except atits ends. one ot' whieli'isprovided with ahead ll tilting ina reeess inone jaw of the t'eniale member. while the. opposite end is made roundjaw ot' the same member. The pin passes through a reetangular oblongopening through the shoes and truniiion. the greater axis ot' the`opening being in the direction ot' the width ot` the shoes. The shorteraxis or width ot' this opening is substantially equal to the width ot'the square portion of the pin. 'lhis eonstriietion permits of theroelting movements otithe shoes on their seats. but prevents anyloiigitiuliiial movenient thereot'. It' desired. a greater roekingiiioven-ient ot' the shoes ean be attained by making the walls ot theopening in the shoes outwardly tlaring from a plane midway of the lengthot' the opening as shown in Figs. l. 'i' and S.

ln eases where a separating movement of the members of the eoupling isundesirable 'a eireular'opening '13 is iornied through the rib 3 asshown in Fig. l0. and in lieu ot' t'oiiiiing the shoes and eonneetingtriiniiioii integral one with the other. the triiiiiiioii is divided., the portions thereol' being integral with the respeetive shoes as shownin Fig. 1l. When plaeing the pa rtsl oi' the eoupling together. theshoes ai'e plaeed on opposite sides ot' the ribs, the portions ot' thetriuiiiioii projeeting into the 'l`he shoes earl-ying with them theniale members ot' the eoiipling. ai'e slid longitudinally between thejaws. i'.

ltis elia i'aeteristie of the eoiistruetion deseribed herein. thatmotion is transmitted from one member ot the eoupling to the otherthrough the shoes. whieh have bearing surt'aees ot eonsiderable area onboth members atall times. regardless of the relative positions otl themembers and that the.

aiul lits snugly in the opposite- I claim herein as my invention:

l. A universal coupling, having in combination two members, one memberbeing provided with a rib, and the other member with oppositely disposedjaws having their inner surfaces curved, shoes having their outersurfaces convex, adapted to bear on the curved inner surfaces ofopposite sides of the jaws and the inner surfaces fiat, adapted to bearon the rib on the Irst mentioned member, said shoes having trumiionsextending through an opening in said rib, and means in line with theaxis of the trunnion for holding the shoes against, longitudinalmovement.

2. A universal coupling having in Combination two members, one memberbeing provided with a rib, and the other member with oppositel \vdisposed jaws having` their inner surfaces curved, shoes having:` theirouter surfaees eonvex, adapted to bear on the eurved inner surt'aees ofthe jaws, and the inner surfaces Hat', adapted to bear on opposite sidesof the rib ot the first mentioned member` said shoes having a hollowtrunnion formed integral therewith and extending through a slot in saidrib and a bolt passingr through the trunnion Afor holding;r the shoes inposition.

In testimony whereof, l have hereunto set my hand.

HANS L. B. SCHRECK. 'itness ALICE TIuLL.

